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Any of various sedges of the genus Eriophorum, chiefly of wet places in northern temperate and cold regions and bearing one or more conspicuous tufts of cottony bristles.
(Plants) any of various N temperate and arctic grasslike bog plants of the cyperaceous genus Eriophorum, whose clusters of long silky hairs resemble cotton tufts. Also called: bog cotton
any rushlike plant constituting the genus Eriophorum, of the sedge family, common in swampy places and bearing spikes resembling tufts of cotton.
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|Noun||1.||cotton grass - any sedge of the genus Eriophorum; north temperate bog plants with tufted spikes|
sedge - grasslike or rushlike plant growing in wet places having solid stems, narrow grasslike leaves and spikelets of inconspicuous flowers